| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner composition by which the image density is maintained stably, the fog phenomenon does not occur, a feeding property is very effective, and the filming phenomenon does not occur, so that high quality images may be provided. SOLUTION: The toner composition includes toner particles containing a colorant, a binder, a charge control agent and a release agent, and an external additive, wherein the external additive contains silica, silicon carbide, magnesium stearate and polyvinylidene fluoride. By adding such an external additive containing fine particulate silica, coarse particulate silica, silicon carbide, magnesium stearate and polyvinylidene fluoride in a predetermined component ratio to a toner composition, a toner composition is obtained by which the image density is maintained stably, the fog phenomenon does not occur, a feeding property is very effective, and the filming phenomenon does not occur, so that high quality images may be provided. COPYRIGHT: (C)2006,JPO&NCIPI |
